Vulnerability DatabaseCVE-2026-9079
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CVE-2026-9079
Published:July 03, 2026
Updated:July 21, 2026
libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.
Affected Packages
https://github.com/curl/curl.git (GITHUB):
Affected version(s) >=curl-8_8_0 <curl-8_21_0
Fix Suggestion:
Update to version curl-8_21_0
Related Resources (3)
https://curl.se/docs/CVE-2026-9079.json
https://curl.se/docs/CVE-2026-9079.html
https://hackerone.com/reports/3750295
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CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Insufficiently Protected Credentials
CWE-522
EPSS
Base Score:
1.06